Memory dump method, computer system, and memory dump program

Abstract

A computer system of the present invention includes cells each of which includes a CPU and a memory, and partitions each of which is configured by combining any number of the cells. A service processor and a control element which controls reading and writing data for memory dumping are provided with the computer system. The cells includes a spare cell which does not belong to any of the partitions. If any of the partitions shuts down because of a system crash, the service processor disconnects the cell in the partition in which the system crash has occurred from the partition with memory information contained in the memory in the cell being held, and sets the spare cell into the partition. After the partition is booted, the control element writes the memory information contained in the memory in the disconnected cell onto the recording medium.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates to a memory dump method, a computer system, and a memory dump program and, more particularly, to a memory dump method, a computer system, and a memory dump program capable of reducing down time of a system by using a small number of hardware (memory) components when a system crash occurs in the system. [0002] Conventionally, a memory dump is obtained when a system crash occurs, and the system is rebooted after the memory dump is obtained. [0003] Consequently, in the related memory dump, there is a problem that if a system crash occurs in a computer system containing very large memory, system down time increases because it takes a large amount of time for obtaining a memory dump. [0004] As a measure against the problem, Japanese Patent Laid-Open No. 2004-102395 discloses a related method. In this method, the information processing system has duplicated memories, the same data is always held in both memories. In occurren...

AI Technical Summary

Benefits of technology

[0005] An object of the present invention is to provide a memory dump method, a computer system, and a memory dump program capable of reducing down time of a system by using a small number of hardware (memory) components when a system crash occurs in the system.

Problems solved by technology

Consequently, in the related memory dump, there is a problem that if a system crash occurs in a computer system containing very large memory, system down time increases because it takes a large amount of time for obtaining a memory dump.

However, this related method has a problem that two memory, one of which is for loading data required for rebooting and the other of which is for holding memory dump data, are needed for each system.

Images